The data on revenue of associations also comprise data on association branches and youth councils, and data on institutes comprise data on religious communities having the humanitarian organisation status. The data excludes the associations, institutes and foundations that have been established by the Republic of Slovenia, municipalities or other public sector entities.

In recent years, revenue of non-governmental organisations was growing despite the economic crisis each year until 2013, when for the first time it was lower than the year before. Revenue of associations was lower than the year before in 2011 and 2013, however, it has been growing since and has reached the highest amount so far in 2017. Institutes only suffered a decrease in revenue in 2012, whereas in 2013 their revenue was already higher than before the crisis. Revenue of foundations was lower than the year before in 2011 and 2014. Only in 2015, their revenue was higher than before the crisis. In 2016 and 2017, foundations suffered another decrease, their revenue sinking below the level of 2009.

In 2017, the non-governmental sector generated € 801 million in revenue. The economic power of the non-governmental sector for 2016 (the data for 2017 is not yet available) equals:

• 140 % of Slovenian agriculture, forestry and fishery combined (based on data gathered by the statistical office, the sector generated € 571,6 million in revenue)

• 115 % of Slovenian immovable property activity (700,3 million)

• 77 % of Slovenian culture, sports and gambling (1.039,4 million)

• 44% of Slovenian food-service activities (1.821,5 million)

• 35 % of Slovenian insurance industry (2.260,3 million)

• 17% of Slovenian construction (4.463,4 million)

More than two thirds of all non-governmental organisations’ revenue is generated by associations, followed by institutes and foundations. Although representing only 11,69 % of all non-governmental organisations, associations generate 30,45 % of all revenue. The high share of revenue generated by associations is reflected in the fact that institutes employ more than a half of the persons working in the non-governmental sector.

When relating the average revenue of a non-governmental organisation to its form, the revenue is highest in case of institutes, amounting to just over € 84,500. The average revenue of foundations and associations is considerably lower, a foundation generating just over € 30,800 in average revenue, and an association slightly more than € 25,500. The average revenue of a non-governmental organisation amounts to € 35,457.

Statistically speaking, each non-governmental organisation on average generates slightly over € 32,000 in revenue annually, but the actual distribution of revenue is very much different. There were 18,24 % of non-governmental organisations that generated no revenue in 2017, and an additional 35,92 % that generated less than € 5,000. Only 9,94 % of non-governmental organisations generated more than € 50,000 in revenue.